If 180. mg of fluorine-18 is shipped at 8:00 A.M., how many milligrams of the radioisotope are still active after 110 min? Express the mass to three significant figures and include the appropriate units.

Q: The following exercise poses a question that can be answered by solving an equation. Give the…

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Q: If 200. mg of fluorine-18 is shipped at 8:00 A.M., how many milligrams of the radioisotope are still…

A: The term radioactive substances can be defined as the atoms which have the tendency to decay…

Q: Complete and balance the following nuclear equation: Rubidium-96 + cesum-135 + X ---> uranium-235.…

A: Nuclear reaction: The given reaction is a nuclear reaction. In the nuclear reaction, one nuclide is…

Q: If pure polonium-210 (k = 5.02 x 10-3 day-1) were used in a crime, based on radioactive…

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Q: While exploring a coal mine, scientists found plant fossils which had been preserved by an…

A:

Q: A 3.6-kg laboratory animal receives a single dose of 8.92x10-4 Gy. (a) How many rads did the animal…

A: (a) Given data contains, Mass of laboratory animal is 3.6-kg. Dose received is 8.92x10-4 Gy.

Q: Krypton-79 has a half-life of 34.50 h. After 138.0 h, 54.25 kg of this radioistope is left. How much…

A: Given, the half-life of Krypton-79 is 34.50 hthe amount of radioisotop left after 138.0 h is 54.25…

Q: if the passing of five half -life leaves 50.0g of a of radioisotope sample, how much was present in…

A: Mass of sample after 5 half life = 50 g Initial amount = ?

Q: In a treatment that decreases pain and reduces inflammation of the lining of the knee joint, a…

A: Initial count (No) = 1100 per second Final count (Nt) = 1.14 per second Time (t) = 24 hours

Q: a wooden object from the site of an ancient temple has a carbon-14 activity of 10 counts/min…

A:

Q: A 3.6-kg laboratory animal receives a single dose of 8.92×10-4 Gy. (a) How many rads did the animal…

A: (a) Given data contains, Mass of laboratory animal is 3.6-kg. Dose received is 8.92x10-4 Gy.

Q: Explain why it is safe to use radioisotopes to diagnose medical problems.

A: To find: Why is is safe to use radioisotopes to diagnose medical problems

Q: A 56 mg sample of a radioactive nuclide is administered to a patient to obtain an image of her…

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Q: During work with a radioactive source, a worker was told that he would receive 45 mrem at a distance…

A: Given: During work with a radioactive source: worker receive 45 mrem at a distance of 7.0 m during…

Q: If the half life of a radioactive element is 32.8 years, how many years will it take for a sample to…

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Q: Beginning with 500g, calculate how much of a radioactive compound remains after 152 seconds if the…

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Q: Fluorine-18, which has a half-life of 110 min, is used in PET scans.  If 100. mg of fluorine-18 is…

A: Reaction in which rate is linearly depend upon one reactant is known as first order reaction.

Q: A sample of coral has a carbon-14 content of 12.5% the value of living coral.  If the half-life of…

A: Given  Half life of Carbon - 14 = 5730 years Remaining amount   = 12.5 %  Time ( t ) = ?

Q: sample

A: We will calculate t1/2 by the help of given information

Q: If a radioisotope's half-life is 2 minutes, after two half-lives there is left   0% of the original…

A: Given, a radioisotope's half-life is 2 minutes.we are asked to calculate the amount of original…

Q: Plutonium oxide, used to power the Cassini space-probe to Saturn, was stored in corrosion resistant…

A: Given: The value of 10 half-lives of Pu-238 = 870 years. And the mass of Pu-238 taken initially = 33…

Q: 100 43 3. The half-life of TC, a B emitter, is 15.8 s. (a) How many atoms of 43TC are present in a…

A: An isotope exhibits radioactivity or emits radioactive particles, when the nucleus of the isotope is…

Q: Some mammoth bones found in Arizona were found by carbon-14 dating to be 1.13x104 years old. What…

A: Given: Original activity = 15.3 disintegrations per minute per gram. Age of bones = 1.13 × 104…

Q: A radioisotope tracer has a half-life of 2 minutes. If a level of <1% is considered safe, when would…

A: We will calculate the time of radioactive tracer by using  radioactive decay process.

Q: Suppose the intensity of radiation from a given source is 150.0 radsat 1.5 miles, how far away from…

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Q: 5.) A sample of bone has a specific activity of 5.22 disintegrations per minute per gram of carbon…

A: Given:

Q: Plutonium-236 is an alpha emitter with a half-life of 2.86 years. How long will it take for the 1.15…

A: Radioactive decays follows first order kinetics. For the for order kinetics: k = 0.693 / t1/2 t =…

Q: 14.25 A wooden artifact is burned and found to contain 21 g of carbon. The ¹4C activity of the…

A:

Q: A 56 mg sample of a radioactive nuclide is administered to a patient to obtain an image of her…

A: Consider the given information is as follows; Half-life of the nuclide t12 = 12 hours Initial amount…

Q: Enter the balanced nuclear equation for the beta decay ( 0/-1e) of cesium-137 Express your answer…

A: In case of β decay, the atomic no. of the element increases by 1 and the atomic mass remains…

Q: ty due to the radioactive decay of the carbon-14 in a tiny sample of an artifact made of wood from…

A: Answer: the half life carbon -14 is = 5.73 × 103 years.  Activity of the sample in initial( Ao)=…

Q: While exploring a coal mine, scientists found plant fossils which had been preserved by an…

A: Given: Amount of carbon-14 in fossil = 20 counts/min = Nf Amount of carbon-14 in living tissue = 160…

Q: 17 1. on + ? + ENERGY Complete the following nuclear reaction 3H + 2,H O A. SHe <-- + u0 O D.a

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Q: 11. If it takes 20-hours for a radionuclide to-decay from 48,000 counts per minute to- 3,000-counts…

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Q: IUCLEAR REACTIONS Zinc-62 decays with a half-life of 9.186 hours. 1. Write the balanced nuclear…

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Q: radioisotope tracer has a half-life of 1.5 minutes. If a level of <1% is considered safe, when would…

A: Half life of a radioactive isotope is the amount of time it takes for one half of the radioactive…

Q: How many half-lives did a radio-active sample complete is 2.5 g of a sample remains from 20.0 g…

A: Half-life time: The time in which the concentration of the radioactive species decreases to half is…

Q: The half life of a specific radionuclide is 8 days. How much of an 80mg sample will be left after 24…

A: There are two methods to solve it : Method (1): The half life is the time in which any compound is…

Q: PET studies require fluorine-18, which is produced in a cyclotron and decays with a half-life of…

A: The decay process has an exponential decay, which in this case means that every 1.83 hours, half the…

Q: The half-life of strontium−90 is 29.1 years. Calculate the radioactivity in millicuries of 11.5 mg…

A: Given, Half life of strontium, t1/2 = 29.1 yr Mass of strontium = 11.5 mg = 0.0115 g    (1 mg =…

Q: Suppose a small quantity of radon gas, which has a half-life of 3.8 days, is accidentally released…

A: To calculate the number of days the laboratory remains evacuated

Q: The atomic masses of hydrogen-2 (deuterium), helium-4, and lithium-6 are 2.014102 amu, 4.002602 amu,…

A: Binding energy is the amount of energy required to disassemble the particles from the atom. Nuclear…

Q: Write a partial decay series for At-217 undergoing the following sequential decays: a, B, a, 8. Part…

A: To write; A partial decay series for At-217 undergoing the sequential decays: α, β, α, β

Q: Calculate the binding energy in kilocalories/ mole of 19F whose atomic weight is 19.0045.

A: Calculate the binding energy in kilocalories/ mole of 19F whose atomic weight is 19.0045.

Q: Plutonium oxide, used to power the Cassini space-probe to Saturn, was stored in corrosion resistant…

A: Given: The value of 10 half-lives of Pu-238 = 870 years. And the mass of Pu-238 taken initially = 33…

Q: A 25-g sample of a pure radioisotope decayed until approximately 1 gram remains. If it took 245 days…

A: Given, A 25-g sample of a pure radioisotope decayed until approximately 1 gram remains. If it took…

Q: If 100. mg of fluorine-18 is shipped at 8:00 A.M., how many milligrams of the radioisotope are still…

A: Half life of fluorine -18 = 109.7 minutes  Initial amount (ao) = 100. gm  Amount left after 220…

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.